Encrypt AES

Encrypt a plaintext message with AES (Advanced Encryption Standard) using a passphrase-based CryptoJS OpenSSL-compatible format. AES is a widely deployed block cipher; this tool produces a Base64 ciphertext string you can store or send, then decrypt later with the same secret.

Algorithm

The passphrase derives key material in the CryptoJS OpenSSL KDF style; AES encrypts the UTF-8 message and packages the result as a Base64 blob typically prefixed with Salted__ when decoded. Output is ciphertext only—anyone without the passphrase should not recover the plaintext. Encryption runs entirely in the browser.

When to use it

• Protect short notes or tokens before pasting into tickets or chat
• Demo AES passphrase encryption compatible with CryptoJS/OpenSSL salted messages
• Round-trip testing with the matching AES decrypt tool

Limitations

Passphrase strength dominates security; short or reused secrets are weak. This is not a full application crypto protocol (no authenticated associated data UI, no key rotation). Ciphertext grows relative to plaintext. Do not treat AES alone as a substitute for TLS in transit. Browser memory retains secrets while the tab is open.

Example

Plaintext Secret message with passphrase passphrase encrypts to a Base64 string beginning like U2FsdGVkX1… (exact bytes vary because of random salt). Decrypting that blob with the same passphrase recovers Secret message.

This skill is available over A2A JSON-RPC and REST. When you already know the skill id and export, call execute directly—no discovery step required.

REST example

curl -sS -X POST https://toolplaza.app/api/helpers/execute \
  -H 'Content-Type: application/json' \
  -d '{"skillId":"cipher__from-message-to-aes","export":"encryptAes","args":["Hello"]}'

A2A JSON-RPC example

Send POST https://toolplaza.app/api/a2a with:

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "message/send",
  "params": {
    "message": {
      "messageId": "uuid",
      "role": "user",
      "parts": [
        {
          "kind": "text",
          "text": "ignored"
        }
      ]
    },
    "metadata": {
      "toolplaza": {
        "skillId": "cipher__from-message-to-aes",
        "export": "encryptAes",
        "args": [
          "Hello"
        ]
      }
    }
  }
}

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